213315587 has 2 divisors, whose sum is σ = 213315588. Its totient is φ = 213315586.

The previous prime is 213315581. The next prime is 213315589. The reversal of 213315587 is 785513312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213315587 - 2⁸ = 213315331 is a prime.

Together with 213315589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213315581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106657793 + 106657794.

It is an arithmetic number, because the mean of its divisors is an integer number (106657794).

Almost surely, 2^213315587 is an apocalyptic number.

213315587 is a deficient number, since it is larger than the sum of its proper divisors (1).

213315587 is an equidigital number, since it uses as much as digits as its factorization.

213315587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 35.

The square root of 213315587 is about 14605.3273499775. The cubic root of 213315587 is about 597.5040639768.

Adding to 213315587 its reverse (785513312), we get a palindrome (998828899).

The spelling of 213315587 in words is "two hundred thirteen million, three hundred fifteen thousand, five hundred eighty-seven".